package com.heima.wemedia.interceptors;

import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.thread.WmThreadLocalUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class WmTokenInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

       //1、从请求头中获取用户id
        String userId = request.getHeader("userId");

        //2、将用户id存放到ThreadLocal中
        if(StringUtils.isNotBlank(userId)){
            WmUser wmUser = new WmUser();
            wmUser.setId(Integer.valueOf(userId));

            WmThreadLocalUtil.set(wmUser);
        }

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        WmThreadLocalUtil.remove();
    }
}
